1/4" Tungsten Carbide Single Cut Grinding Burr 1/8" Shank Ball Shape For Dremel Turn your Dremel or other rotary tool into high-speed grinder Grinding portion measures 1/4"D x 1/2"L with Ball shape and single-cut grinding burr Tungsten Carbide will provide superior cutting power; Will work with all Rotary tools and Drills, chucks and collets Extremely durable Tungsten Carbide for the most-demanding material removal; Great for carving, grooving, shaping, filing steel, aluminum, stone, tile, wood, plastic, fiberglass, virtually anything High speed steel 1/8" shank diameter with an overall length of 2"